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Title: Exploring room-temperature transport of single-molecule magnet-based molecular spintronics devices using the magnetic tunnel junction as a device platform

Abstract

A device architecture utilizing a single-molecule magnet (SMM) as a device element between two ferromagnetic electrodes may open vast opportunities to create novel molecular spintronics devices. Here, we report a method of connecting an SMM to the ferromagnetic electrodes. We utilized a nickel (Ni)–AlOx–Ni magnetic tunnel junction (MTJ) with the exposed side edges as a test bed. In the present work, we utilized an SMM with a hexanuclear [Mn6(μ3-O)2(H2N-sao)6(6-atha)2(EtOH)6] [H2N-saoH = salicylamidoxime, 6-atha = 6-acetylthiohexanoate] complex that is attached to alkane tethers terminated with thiols. These Mn-based molecules were electrochemically bonded between the two Ni electrodes of an exposed-edge tunnel junction, which was produced by the lift-off method. Here, the SMM-treated MTJ exhibited current enhancement and transitory current suppression at room temperature. Monte Carlo simulation was utilized to understand the transport properties of our molecular spintronics device.

Authors:
ORCiD logo [1];  [1];  [1];  [2]; ORCiD logo [2]
+ Show Author Affiliations
  1. Department of Mechanical Engineering, University of the District of Columbia, Washington DC-20008, USA
  2. Instituto de Ciencia Molecular (ICMol), Universitat de València, 46980 Paterna, Spain
Publication Date:
Research Org.:
University of the District of Columbia, Washington, DC (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1607829
Alternate Identifier(s):
OSTI ID: 1638592
Grant/Contract Number:  
NA0003945; FOA-0003945
Resource Type:
Published Article
Journal Name:
RSC Advances
Additional Journal Information:
Journal Name: RSC Advances Journal Volume: 10 Journal Issue: 22; Journal ID: ISSN 2046-2069
Publisher:
Royal Society of Chemistry
Country of Publication:
United Kingdom
Language:
English
Subject:
42 ENGINEERING

Citation Formats

Tyagi, Pawan, Riso, Christopher, Amir, Uzma, Rojas-Dotti, Carlos, and Martínez-Lillo, Jose. Exploring room-temperature transport of single-molecule magnet-based molecular spintronics devices using the magnetic tunnel junction as a device platform. United Kingdom: N. p., 2020. Web. doi:10.1039/C9RA09003G.
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Tyagi, Pawan, Riso, Christopher, Amir, Uzma, Rojas-Dotti, Carlos, & Martínez-Lillo, Jose. Exploring room-temperature transport of single-molecule magnet-based molecular spintronics devices using the magnetic tunnel junction as a device platform. United Kingdom. https://doi.org/10.1039/C9RA09003G
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Tyagi, Pawan, Riso, Christopher, Amir, Uzma, Rojas-Dotti, Carlos, and Martínez-Lillo, Jose. Tue . "Exploring room-temperature transport of single-molecule magnet-based molecular spintronics devices using the magnetic tunnel junction as a device platform". United Kingdom. https://doi.org/10.1039/C9RA09003G.
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@article{osti_1607829,
title = {Exploring room-temperature transport of single-molecule magnet-based molecular spintronics devices using the magnetic tunnel junction as a device platform},
author = {Tyagi, Pawan and Riso, Christopher and Amir, Uzma and Rojas-Dotti, Carlos and Martínez-Lillo, Jose},
abstractNote = {A device architecture utilizing a single-molecule magnet (SMM) as a device element between two ferromagnetic electrodes may open vast opportunities to create novel molecular spintronics devices. Here, we report a method of connecting an SMM to the ferromagnetic electrodes. We utilized a nickel (Ni)–AlOx–Ni magnetic tunnel junction (MTJ) with the exposed side edges as a test bed. In the present work, we utilized an SMM with a hexanuclear [Mn6(μ3-O)2(H2N-sao)6(6-atha)2(EtOH)6] [H2N-saoH = salicylamidoxime, 6-atha = 6-acetylthiohexanoate] complex that is attached to alkane tethers terminated with thiols. These Mn-based molecules were electrochemically bonded between the two Ni electrodes of an exposed-edge tunnel junction, which was produced by the lift-off method. Here, the SMM-treated MTJ exhibited current enhancement and transitory current suppression at room temperature. Monte Carlo simulation was utilized to understand the transport properties of our molecular spintronics device.},
doi = {10.1039/C9RA09003G},
journal = {RSC Advances},
number = 22,
volume = 10,
place = {United Kingdom},
year = {Tue Mar 31 00:00:00 EDT 2020},
month = {Tue Mar 31 00:00:00 EDT 2020}
}
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Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1039/C9RA09003G
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Cited by: 19 works
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Figures / Tables:

Fig. 1 Fig. 1: 3D view of MTJ with exposed side edges (a) before and (b) after the bridging of SMM channels. (c) Magnified view of one SMM covalently bonded with two Ni electrodes. (d) SEM of a complete SMM-based MTJMSD. (e) View along the crystallographic [111] direction of the molecular structuremore » of the SMM. H atoms and ethanol molecules of crystallization have been omitted for clarity. Color code: pink, Mn; yellow, S; red, O; blue, N; black, C.« less
All figures and tables (6 total)
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